Ruxandra is gorgeous! I love it, it's elegant and exotic. Plus, I quite like Romanian names : )
I actually went to school with a girl named Rukshana who went by
Roxy.
I think it could work in the U.S. People may initially confuse it with
Alexandra or
Roxana, but I think that the pronunciation issues could be worked out.
I think I would be inclined towards the nicknamed
Roxy and
Xandra (if I even used a nickname at all).
I'm tempted towards
Ruxandra Zelda just for fun.
Ruxandra AnoukRuxandra AzuraRuxandra Evening (I know you won't give up Evening as a first name, but I like the sound of this anyway)
Ruxandra Fey
Ruxandra IndiraRuxandra JacintheRuxandra Jean (For
Sara)
Ruxandra Juniper (Just because I have to)
Ruxandra LenoreRuxandra Moon
Ruxandra PhoebeRuxandra Song
Ruxandra Sonnet
Ruxandra Terese (For your mum of course)
Ruxandra TopazRuxandra True
Ruxandra Zelda